Evand, Yogi, Diana Chalil, and Rahmanta Ginting. “Distribution Strategy of Subsidized Fertilizer in Smallholder Oil Palm Plantation at Air Batu Subdistrict, Asahan District, North Sumatra”. Indonesian Journal of Agricultural Research 2, no. 3 (February 9, 2020): 180 - 187. Accessed April 20, 2024. https://talenta.usu.ac.id/InJAR/article/view/3202.